<template>
    <div class="tabs">
        <el-tag
            v-for="(item,index) in tags"
            :key="item.path"
            :closable="item.name!=='home'"
            :effect="$route.name===item.name?'dark' : 'plain'"
            @click="changeMenu(item)"
            @close="handleClose(item,index)"
            size="small"
            >
            {{ item.label }}
        </el-tag>
    </div>
</template>

<script>
import { mapState ,mapMutations } from 'vuex'
export default {
    name: 'CommonTag',
    data(){
        return {}
    },
    computed:{
        ...mapState({
            tags: state => state.tab.tabsList
         })
    },
    methods:{
        ...mapMutations(['closeTag']),
        changeMenu(item){
            console.log(item)
            if(this.$route.path !== item.path) {
                this.$router.push({name:item.name})
            }
        },
        handleClose(item,index){
            //调用store中的mutation
            this.closeTag(item)
            const length = this.tags.length
            //删除后的跳转
            if(item.name!==this.$route.name){
                return
            }
            //删除的最后一项
            if(index===length){
                this.$router.push({
                    name: this.tags[index-1].name
                })
            }else{
                this.$router.push({
                    name: this.tags[index].name
                })
            }
        }
    }
}
</script>

<style lang="less" scoped>
.tabs{
    padding: 15px;
    .el-tag{
        margin-right: 15px;
        cursor: pointer;
    }
}
</style>